"LINEAR DEPRECIATION A new machine was purchased by National Textile for $ $120,000.$ For income tax purposes, the machine is depreciated linearly over $10$ years; that is$,$ the book value of the machine decreases at a constant rate, so that at the end of $10$ years the book value is zero.A$.$ Express the book value of the machine V as a function of the age, in years, of the machine n$.$B$.$ Sketch the graph of the function in part $($A$).$C$.$ Find the book value of the machine at the end of the sixth year.D$.$ Find the rate at which the machine is being depreciated each year."Directions Partial answer$($s$)$ for this problem is$/$are: A$.$ V$=-12,000$n $+120,000$; C$.$ $ $48,000$; D$.$ $ $12,000/$year$.$ Please work out this problem and explain, in writing, how we can solve this problem.